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Re: 20011004: stcloudstate reclass
- Subject: Re: 20011004: stcloudstate reclass
- Date: Fri, 05 Oct 2001 12:10:27 -0600
"Anderson, Alan C." wrote:
>
> -----Original Message-----
> From: anne [mailto:address@hidden]
> Sent: Thursday, October 04, 2001 10:28 PM
> To: Anderson, Alan C.; Pete Pokrandt
> Cc: address@hidden; address@hidden
> Subject: Re: 20011004: stcloudstate reclass
>
> Unidata Support wrote:
>
> Alan,
>
> If your site is dropping products because they're arriving too late, you
> should see evidence of this in your log. Look for 'skipped' entries.
>
> If you need help diagnosing the problem, let me know.
>
> Anne
>
> --
> ***************************************************
> Anne Wilson UCAR Unidata Program
> address@hidden P.O. Box 3000
> Boulder, CO 80307
> ----------------------------------------------------
> Unidata WWW server http://www.unidata.ucar.edu/
> ****************************************************
>
> Anne
>
> Thanks for writing, I appreciate your interest. I looked at our
> ldm log files this morning and can see some skipped entries, but
> I don't feel competent to judge whether we still have a problem.
>
> We do seem to have a full stack of IR images, but I only get
> one Goes East Vis image even though my directory shows a full
> set of AREA014* files, which is where I think the Goes E vis
> files are supposed to be.
>
> I do see what looks like a lot of startup messages with a file
> decoding line, and then an exit within just a second or so later.
> This was for Area files, which I would have expected to take
> somewhat longer.
> I have pasted a couple of exerpts from our log file below.
> I would appreciate your comments about the meaning.
>
> Our ldm ingest machine is host waldo.stcloudstate.edu
> (ip # 199.17.31.240)
> if you want to take a look.
>
> Thanks
>
> Alan Anderson
>
> Oct 05 15:30:35 waldo pnga2area[24631]: output file pathname:
> /var/data/mcidas/A
> REA0169
> Oct 05 15:30:35 waldo pnga2area[24631]: unPNG:: 292621 607776
> 2.0770
> Oct 05 15:30:35 waldo pnga2area[24631]: Exiting
> Oct 05 15:32:30 waldo pqexpire[424]: > Recycled 2185.062 kb/hr (
> 5931.031 pro
> ds per hour)
> Oct 05 15:32:33 waldo pnga2area[24635]: Starting Up
> Oct 05 15:32:33 waldo pnga2area[24635]: output file pathname:
> /var/data/mcidas/A
> REA1133
> Oct 05 15:32:34 waldo pnga2area[24635]: unPNG:: 78000 242720
> 3.1118
> Oct 05 15:32:34 waldo pnga2area[24635]: Exiting
> Oct 05 15:34:47 waldo pnga2area[24651]: Starting Up
> Oct 05 15:34:47 waldo pnga2area[24651]: output file pathname:
> /var/data/mcidas/A
> REA0066
> Oct 05 15:34:47 waldo pnga2area[24651]: unPNG:: 317273 607776
> 1.9156
> Oct 05 15:34:47 waldo pnga2area[24651]: Exiting
> Oct 05 15:35:19 waldo nldn2md[24669]: NLDN2MD -- BEGIN
> Oct 05 15:35:19 waldo nldn2md[24669]: PRODUCT CODE=LD 2001278
> 15240
> 0
>
> Oct 05 15:57:30 waldo pqexpire[424]: > Recycled 2183.065 kb/hr (
> 5925.494 pro
> ds per hour)
> Oct 05 15:59:03 waldo proftomd[24743]: Starting up
> Oct 05 15:59:03 waldo proftomd[24743]: Decoding 2001278.1454 data into
> /var/data
> /mcidas/MDXX0098
> Oct 05 15:59:03 waldo proftomd[24743]: Exiting
> Oct 05 15:59:21 waldo nldn2md[24744]: NLDN2MD -- BEGIN
> Oct 05 15:59:21 waldo nldn2md[24744]: PRODUCT CODE=LD 2001278
> 15480
> 0
> Oct 05 15:59:21 waldo nldn2md[24744]: Appending to MD file: 78
> Oct 05 15:59:21 waldo nldn2md[24744]: NLDN2MD - Flash events in file:
> 56256
> Oct 05 15:59:21 waldo nldn2md[24744]: NLDN2MD -- DONE
> Oct 05 16:00:34 waldo pnga2area[24798]: Starting Up
> Oct 05 16:00:34 waldo pnga2area[24798]: output file pathname:
> /var/data/mcidas/A
> REA0202
> Oct 05 16:00:34 waldo pnga2area[24798]: unPNG:: 6982 225088
> 32.2383
> Oct 05 16:00:34 waldo pnga2area[24798]: Exiting
> Oct 05 16:02:30 waldo pqexpire[424]: > Recycled 2182.576 kb/hr (
> 5924.132 pro
> ds per hour)
> Oct 05 16:04:13 waldo pnga2area[24830]: Starting Up
> Oct 05 16:04:13 waldo pnga2area[24830]: output file pathname:
> /var/data/mcidas/A
> REA0190
> Oct 05 16:04:14 waldo pnga2area[24830]: unPNG:: 124315 308448
> 2.4812
> Oct 05 16:04:14 waldo pnga2area[24830]: Exiting
> /usr/local/ldm/logs%
Hi Alan,
I logged on to your machine. First, your products are coming in rather
slow - there's about a 40 minute latency. I did a traceroute to sunset
to check the connectivity:
/usr/local/ldm/etc% traceroute sunset.meteor.wisc.edu
traceroute to sunset.meteor.wisc.edu (144.92.130.6), 30 hops max, 40
byte packets
1 router (199.17.31.254) 0.794 ms 1.315 ms 1.463 ms
2 * * *
3 199.17.55.253 (199.17.55.253) 3.181 ms 12.886 ms 15.104 ms
4 umn-lena-ATM3-0-0-940.r.state.mn.us (207.171.90.122) 5.692 ms
5.741 ms 7.519 ms
5 otrx.northernlights.gigapop.net (192.42.152.22) 8.496 ms 5.986 ms
7.621 ms
6 otr-onvoy.northernlights.gigapop.net (192.42.152.14) 40.917 ms
38.025 ms 39.606 ms
7 core1-ge1-1-0.msc.mr.net (137.192.3.254) 47.190 ms 48.657 ms
50.747 ms
8 core1-so1-0-1.ply.mr.net (137.192.5.9) 40.182 ms 25.065 ms 21.099
ms
9 206.220.243.118 (206.220.243.118) 26.067 ms 34.686 ms 27.808 ms
10 r-peer-WNMadison-gw.net.wisc.edu (216.56.1.18) 26.100 ms 29.289
ms 30.624 ms
11 144.92.128.206 (144.92.128.206) 30.048 ms 28.222 ms 26.280 ms
12 sunset.meteor.wisc.edu (144.92.130.6) 30.847 ms 26.034 ms 33.446
ms
The second hop may indicate a firewall, I'm not sure. Or, there's
congestion on your campus, as the third hop is still in your 199.17
domain.
In looking at the logs, you are definately loosing some products. So
far today you've lost 31. Here are loses for three previous days:
Oct 4: 81
Oct 3: 292
Oct 2: 34
The products appear to be running between a few fractions of seconds too
old and over 10 minutes to old. I think this is because of the quality
of your connection to sunset.
Otherwise, I don't see any other problems in the log. I think the
products that are being decoded are probably complete, otherwise I
believe an error would be reported in the log. Are they working in
Mcidas for you?
One way to avoid losing products due to latencies is to change the
default setting from an hour old to something longer. I can do this for
you if you'd like.
However, I have one other recommendation for you. You are running a
very old version of the LDM. I highly recommend that you upgrade. You
are missing the advantages of significantly improved algorithms, plus
some new feed types including NEXRAD. What do you think?
Anne
--
***************************************************
Anne Wilson UCAR Unidata Program
address@hidden P.O. Box 3000
Boulder, CO 80307
----------------------------------------------------
Unidata WWW server http://www.unidata.ucar.edu/
****************************************************